From the perspective of development background,concepts and related policies of ultra-low emission,according to work practice,some issues and difficulties that need to be paid attention to in the environmental impact ...From the perspective of development background,concepts and related policies of ultra-low emission,according to work practice,some issues and difficulties that need to be paid attention to in the environmental impact assessment of ultra-low-emission thermal power projects were discussed from the aspects of evaluation criteria,evaluation grade and scope,pollution control technical lines,environmental benefit accounting,and total emission control,and corresponding recommendations were put forward.展开更多
Based on the revised reduction models of the 14 low-carbon ICT solutions from Chongqing Mobile of the China Mobile Group,the CO2e emission reduction brought about by low-carbon ICTs of the wireless telecom sector of C...Based on the revised reduction models of the 14 low-carbon ICT solutions from Chongqing Mobile of the China Mobile Group,the CO2e emission reduction brought about by low-carbon ICTs of the wireless telecom sector of Chongqing Mobile,the entire China Mobile Group and the whole China in 2009 is calculated.And then the CO2e emission reduction potentials in 2010,2020 and 2030 are calculated in four main important fields of China,i.e.,intelligent transportation,dematerialization,smart work and smart appliances.The ICTs in the telecom sector are mostly dedicated to these fields.It provides a valuable insight into future reduction targets that should be set up for China.展开更多
According to the international technology roadmap for semiconductors （ITRS）,32nm technology node will be introduced around 2009. Scaling of CMOS logic devices from 45 to 32nm node has come across significant barrier...According to the international technology roadmap for semiconductors （ITRS）,32nm technology node will be introduced around 2009. Scaling of CMOS logic devices from 45 to 32nm node has come across significant barriers. Overcoming these pitch-scaling induced barriers requires integrating the most advanced process technologies into product manufacturing. This paper reviews and discusses new technology applications that could be potentially integrated into 32nm node in the following areas：extension of immersion lithography,mobility enhancement substrate technology,metal/ high-k （MHK） gate stack, ultra-shallow junction （USJ） and other strain enhancement engineering methods, including stress proximity effect （SPT）, dual stress liner （DSL）, stress memorization technique （SMT）, high aspect ratio process （HARP） for STI and PMD,embedded SiGe （for pFET） and SiC （for nFET） source/drain （S/D） using selective epitaxial growth （SEG） method,metallization for middle of line （MOL） and back-end of line （BEOL） ,and ultra low-k （ULK） integration.展开更多
As a megacity with thriving economy, Shanghai is experiencing rapid motorisation and confronted with traffic congestion problems despite its low car ownership. It is of value to look into the policies on emission cont...As a megacity with thriving economy, Shanghai is experiencing rapid motorisation and confronted with traffic congestion problems despite its low car ownership. It is of value to look into the policies on emission control of motor vehicle and congestion reduction in such a city to explore how to reconcile mobility enhancement with the environment. Results of a dynamic simulation displayed time paths of emissions from motor vehicles in Shanghai over the period from 2000 to 2020. The simulation results showed that early policies on emission control of motor vehicle could bring about far-reaching effects on emission reduc- tion, and take advantage of available low-polluting technologies and technical innovation over time. Travel demand management would play an important role in curbing congestion and reducing motor vehicle pollution by calming down car ownership rise and deterring inefficient trips as well as reducing fuel waste caused by congestion.展开更多
Unsupervised and supervised pattern recognition( PR)techniques are used to classify the acoustic emission( AE) data originating from the quasi-isotropic self-reinforced polyethylene composites,in order to identify the...Unsupervised and supervised pattern recognition( PR)techniques are used to classify the acoustic emission( AE) data originating from the quasi-isotropic self-reinforced polyethylene composites,in order to identify the various mechanisms in the multiangle-ply thermoplastic composites. Ultra-high molecular weight polyethylene / low density polyethylene( UHMWPE / LDPE)composites were made and tested under quasi-static tensile load. The failure process was monitored by the AE technique. The collected AE signals were classified by unsupervised and supervised PR techniques, respectively. AE signals were clustered with unsupervised PR scheme automatically and mathematically. While in the supervised PR scheme,the labeled AE data from simple lay-up UHMWPE / LDPE laminates were utilized as the reference data.Comparison was drawn according to the analytical results. Fracture surfaces of the UHMWPE / LDPE specimens were observed by a scanning electron microscope( SEM) for some physical support. By combining both classification results with the observation results,correlations were established between the AE signal classes and their originating damage modes. The comparison between the two classifying schemes showed a good agreement in the main damage modes and their failure process. It indicates both PR techniques are powerful for the complicated thermoplastic composites. Supervised PR scheme can lead to a more precise classification in that a suitable reference data set is input.展开更多
基金Supported by Special Project for Research on Prevention and Control of Air Pollution from Fire Coal in 2018 of Ministry of Ecology and Environment of the People’s Republic of China(2018A030)
文摘From the perspective of development background,concepts and related policies of ultra-low emission,according to work practice,some issues and difficulties that need to be paid attention to in the environmental impact assessment of ultra-low-emission thermal power projects were discussed from the aspects of evaluation criteria,evaluation grade and scope,pollution control technical lines,environmental benefit accounting,and total emission control,and corresponding recommendations were put forward.
基金supported by National Natural Science Foundation of China under Grant No. 71001010Fundamental Research Funds for Central Universities under Grant No.2009RC1001
文摘Based on the revised reduction models of the 14 low-carbon ICT solutions from Chongqing Mobile of the China Mobile Group,the CO2e emission reduction brought about by low-carbon ICTs of the wireless telecom sector of Chongqing Mobile,the entire China Mobile Group and the whole China in 2009 is calculated.And then the CO2e emission reduction potentials in 2010,2020 and 2030 are calculated in four main important fields of China,i.e.,intelligent transportation,dematerialization,smart work and smart appliances.The ICTs in the telecom sector are mostly dedicated to these fields.It provides a valuable insight into future reduction targets that should be set up for China.
文摘According to the international technology roadmap for semiconductors （ITRS）,32nm technology node will be introduced around 2009. Scaling of CMOS logic devices from 45 to 32nm node has come across significant barriers. Overcoming these pitch-scaling induced barriers requires integrating the most advanced process technologies into product manufacturing. This paper reviews and discusses new technology applications that could be potentially integrated into 32nm node in the following areas：extension of immersion lithography,mobility enhancement substrate technology,metal/ high-k （MHK） gate stack, ultra-shallow junction （USJ） and other strain enhancement engineering methods, including stress proximity effect （SPT）, dual stress liner （DSL）, stress memorization technique （SMT）, high aspect ratio process （HARP） for STI and PMD,embedded SiGe （for pFET） and SiC （for nFET） source/drain （S/D） using selective epitaxial growth （SEG） method,metallization for middle of line （MOL） and back-end of line （BEOL） ,and ultra low-k （ULK） integration.
文摘As a megacity with thriving economy, Shanghai is experiencing rapid motorisation and confronted with traffic congestion problems despite its low car ownership. It is of value to look into the policies on emission control of motor vehicle and congestion reduction in such a city to explore how to reconcile mobility enhancement with the environment. Results of a dynamic simulation displayed time paths of emissions from motor vehicles in Shanghai over the period from 2000 to 2020. The simulation results showed that early policies on emission control of motor vehicle could bring about far-reaching effects on emission reduc- tion, and take advantage of available low-polluting technologies and technical innovation over time. Travel demand management would play an important role in curbing congestion and reducing motor vehicle pollution by calming down car ownership rise and deterring inefficient trips as well as reducing fuel waste caused by congestion.
基金Scientific Research Foundation of Guangdong Polytechnic,China(No.K2010201)
文摘Unsupervised and supervised pattern recognition( PR)techniques are used to classify the acoustic emission( AE) data originating from the quasi-isotropic self-reinforced polyethylene composites,in order to identify the various mechanisms in the multiangle-ply thermoplastic composites. Ultra-high molecular weight polyethylene / low density polyethylene( UHMWPE / LDPE)composites were made and tested under quasi-static tensile load. The failure process was monitored by the AE technique. The collected AE signals were classified by unsupervised and supervised PR techniques, respectively. AE signals were clustered with unsupervised PR scheme automatically and mathematically. While in the supervised PR scheme,the labeled AE data from simple lay-up UHMWPE / LDPE laminates were utilized as the reference data.Comparison was drawn according to the analytical results. Fracture surfaces of the UHMWPE / LDPE specimens were observed by a scanning electron microscope( SEM) for some physical support. By combining both classification results with the observation results,correlations were established between the AE signal classes and their originating damage modes. The comparison between the two classifying schemes showed a good agreement in the main damage modes and their failure process. It indicates both PR techniques are powerful for the complicated thermoplastic composites. Supervised PR scheme can lead to a more precise classification in that a suitable reference data set is input.
